HVAC actuator with output torque compensation
US8084982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Mar 29, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An HVAC actuator, such as a spring return actuator, may adjust the maximum output torque of the motor with the varying spring return force of the HVAC actuator as the HVAC actuator moves through its range of motion. In some cases, this may provide a more constant force at the output of the HVAC actuator and reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached. Also, an HVAC actuator is disclosed that can be configured to discover and store the location of one or more end stop(s), and to slow the speed of the motor down before the end stop(s) is reached. This may reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.